Please help with #8 with an explanation

The standard deviation for a set of data is 5.5. the mean is 265. what is the margin of error?

The map shows the location of the airport and a warehouse in a city. though not displayed on the map, there is also a factory 112 miles due north of the warehouse.a truck traveled from the warehouse to the airport and then to the factory. what is the total number of miles the truck traveled?

Your best friend told you that last week scientists disco y that las vegas is responsible for abrupt climate changes. which do you think is best way to research that recent discovery? an encyclopedia usgs internet site a book in the library your best friend’s parents for your ! ❤️